Vault-door.



J. R. FLOOD.

VAULT DOOR.

APPLIGATION FILED APB. 1, 1911.

- ,Patented Nov; 28, 1911.

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J. R. FLOOD.

VAULT DooR. APPLICATION' FILED APB. 1, 1911.

' Patented Nov. 28, 1911.

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UNrEED sTA'rEs PATENT oEEioE.

JOI-IN R. FLOOD, OF SPOKANE, WASHINGTON.

v VAULT-DOOR.

To all whom it may concern:

Be it known that I, JOHN R. FLooD, a citizen of the United States,residing at Spokane, in the county of Spokane and State of Washington,have invented new and useful Improvements in Vault-Doors, of which thefollowing is a specification.

This invention relates to vault closures and more particularly tomechanism for operating the same so thatthey may be conveniently raisedor lowered without going down into the basement or vault.

One of the principal objects of the invention is the provision of meanswhereby the vault covers may be conveniently raised and loweredsimultaneously from the outside of the vault by the manipulation of asingle lever or crank.

A further object of the invention is the provision of a novel formofguard or gate which is thrown to open position when the doors areopened and is returned to closed position when the doors are closed.

Further objects of the invention will appear as the following specificdescription is read in connection with the accompanying drawings, whichform a part of this application, and in which Figure 1 is a top planview. Fig. 2 is a section taken on the line 2-2 of Fig. 1. Fig. 8 is asimilar view taken on the line 3-3 of Fig. 1. Fig. 4 is a similar viewwith the parts shown in Fig. 3 in closed position. Fig. 5 is a detailtop plan view with the doors raised.

Referring more particularly to the drawings, 1 represents the roof ofthe vault or basement and also the pavement or sidewalk. This roof isprovided with an opening 2 therein whose walls are reinforced by theangle irons 3 and 4, both having one leg thereof embedded in thematerial of which the roof or sidewalk is formed. Mounted within theangle iron 3, the roof material being cut away for this purpose, arebearing blocks 5 to which are secured the hinge members 6. These hingemembers have their outer ends turned at right angles, as shown at 7, soas to engage between the frame 8 0f the doors and their reinforcedconcrete bodies 9 which completely ll the frame. These doors are hingedat opposite sides of the opening and are adapted to meet in the centerand, when in lowered or closed position, are supported upon the angleirons 4.

Specification of Letters Latent.

Application filed April 1, 1911.

Patented Nov. as, 191i.

Serial No. 618,346.

Depending from the angle irons 4 and ysecured thereto are shaft supportsor bearing members 10 in which is journaledV a transverse shaft 11having secured to one endv thereof, beyond the adjoining bearing member,a worm wheel 12 which is engaged by a worm 13 journaled in suitablebearings 14 carried by the angle irons 4. Mounted upon the shaft 11adjacent each bearing member are drums 15 upon which are wound thecables or chains 16. The free ends of the cables are passed over drumsor pulleys 17 and under combineddrums and pulle s 18 and are connectedto the lifting arms 9 secured to the opposite sides of the door A andextend diagonally away therefrom beneath the hinges thereof. Voundaround the pulleys of the combined pulleys and drums 18 are cables 20which are connected to arms 21, similar to the arms 19, secured to thedoor B.

When the screw is operated to rotate the worm wheel the cable 1G iswound up upon the drums 15 and, as this cable passes under the pulley18, these pulleys will be rotated in a direction indicated by the arrowto wind up the cables 20. Thus it will be seen that both doors may beraised and lowered simultaneously.

In order to rotate the worm or screw 13 the upper end of the same isprovided with a squared boss 22 upon which is mounted a removable crankwrench 23 which passes through an aperture 24 in the roof or pavement 1.

Pivoted to the outer end of each door atA opposite sides thereof aregate arms 25 which have connected to their outer free ends the togglelevers 26, whose lower ends are connected to the inner ends of the doorat opposite sides thereof, as shown at 27. The inner members of thetoggle levers constitute one leg of a bell crank 28 whose lower leg hassecured thereon a suitable weight 29 which, when the door is raised, isin parallelism therewith. When the doors are closed, as shown in Fig. 4,the lower arm of the bell crank lever 28 will lie substantially parallelwith the arms 19-21 and the toggle levers 26 will'be folded up betweenthe door and the arm 25.

Having thus described the invention, what I claim as new is 1. In adevice of the class described, the combination with a pavement having anaperture therein, of independent doors hinged to the pavement forclosing said aperture, arms carried by said doors, a winding drum, acable connected to the winding drum and to the arms on one of saiddoors, a second winding drum operated by the cable, a cable connected tosaid second winding drum and to the arms of the other door, and meanscontrolled from the outside for operating ltlle rst drum, whereby bothdrums are simultaneously operated.

V2. In a device of the class described, the combination with a pair ofdoors, means for simultaneously opening and closing the same, armspivoted to the outer end of said doors, toggle levers pivot-ed to saidarms and- Wtheopening covered by the doors.

In testimony whereof I afliX my signature in presence of two witnesses.

, JOHN R. FLOOD. Witnesses:

F. I-I. OHM, FRANK M. DAGGETT.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

